US3133144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryostat
Assignee: AT&T Inc
•
Filing: 1962-08-16
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Granted: 1964-05-12
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Expires: 1982-08-16
Abstract
No abstract record available.
Inventors
- 👤 William B Cottingham
- 👤 John E Kunzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:44
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/06; H01F6/065; F; F17; F17C; F17C3/00; F17C3/02; F17C3/08; F17C3/085; F17C2203/00; F17C2203/06; F17C2203/068; F17C2203/0687; F17C2221/00; F17C2221/01; F17C2221/014; F17C2221/016; F17C2221/017; F17C2270/00; F17C2270/05; F17C2270/0509; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884; Y10S505/885
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
A CRYOSTAT COMPRISING: AN EVACUATED ENCASEMENT HAVING A CYLINDRICAL OUTER WALL, A CYLINDRICAL INNER WALL AND A PAIR OF END PLATES; SAID ENCASEMENT CONTAINING FIRST, SECOND, THRID AND FOURTH CONCENTRIC ANNULAR CHAMBERS, THE FIRST CHAMBER SURROUNDING THE SECOND CHAMBER, THE SECOND CHAMBER SURROUNDING THE THIRD CHAMBER, AND THE THIRD CHAMBER SURROUNDING THE FOURTH CHAMBER; THE FIRST ANNULAR CHAMBER BEING ADAPTED TO CONTAIN A FIRST LIQUEFIED GAS; THE SECOND ANNULAR CHAMBER BEING ADAPTED TO CONTAIN A SECOND LIQUEFIED GAS HAVING A LOWER BOILING POINT THAN THE FIRST GAS; THE THIRD CHAMBER CONTAINING A SOLENOID; THE FOURTH CHAMBER CONTAINING PIPING WHICH HAS AN OPEN END COMMUNICATING WITH THE SECOND CHAMBER AND BEING ADAPTED TO TRANSMIT EVAPORATED GAS FROM THE SECOND CHAMBER, THEREBY REFRIGERATING THE FOURTH CHAMBER.
References Cited (Backward Citations)
US3015960A
Cited
US2816232A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |